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Date: Thu, 16 Feb 2023 14:21:18 +0100
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Subject: Re: [RFC v0 0/1] Add support for CRC64 generation in linker
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To: binutils@sourceware.org
Cc: nickc@redhat.com
References: <20230216131905.1012-1-binutils@emagii.com>
From: Ulf Samuelsson <binutils@emagii.com>
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Den 2023-02-16 kl. 14:19, skrev Ulf Samuelsson via Binutils:
> Here is the first draft of introducing CRC64 generation in the linker
>
> So far it
> * reserves room for the CRC (8 bytes)
> * Declares a symbol ___CRC64___ for the address of the CRC.
> * Allows specifying the polynom (ECMA, ISO or your own)
> * Allows for inversion in the CRC calculation (CRC64-WE)
> * Allows specifying the area that should be checked.
> * Declares the symbol "___CRC64_START__" for the beginning
> * Declares the symbol "___CRC64_END__"   for the end (not included)
> * Creates a 2kB table which speeds up the CRC calculation
> * Can insert the 2kB table into the .text section
>
> It does not yet calculate the CRC of the specified area.
> I need to figure out how to access the section(s) covered
> for calculating the CRC (between ___CRC64_START___ and ___CRC64_END___)
> and then insert the calculated CRC at ___CRC64___ before
> the output is generated.
>
> [PATCH v0 1/1] [RFC] Add support for CRC64 generation in linker

Some of the formatting is off as well.

Best Regards
Ulf Samuelsson